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Strike one peaks at 66dB

 

The meter is very helpful for setting up your home theater ... everyone should have one ;-)

Seriously it provides an absolute check on how loud these things are. The scale in this question is centered on 70dB and the peaks are 4dB down i.e. 66dB.

In practice the tone is so distinct that you hear it in even quite noisy settings such as a car at 100kph.

I've not heard other sonneries but I would also be conscious that you can make them sound louder or quieter based on the surface they are placed on, a wood surface is quite good being n ot too sound absorbent, wheras paper (or flesh) is quite the opposite

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